Metal last and jack for boots or shoes



(No Model.) 2 sheets-sheet. 1.

S. MAWHINNEY.

METAL LAST'AND JACK FOR BOOTS OR SHOES.

Patented Apr. 17; 1883.

PETERS. Pnnmumugnpher. wnhinglm D. C.

(No Model.)

2 Sheets-Sheet 2.

, S. lMAWHINNEYl METAL LAST AND JAOK FOR BOOTS OB. SHOES.

Patented Apr. 1'7, 1883.

TuS/ENTE? cfwmfwl .Mm/ulm@ ff Ummm STATESA PATENT OFFICE..

SAMUEL MAWHINNEY, OF WORCESTER, MASSACHUSETTS.

METAL LAST AND JACK FOR BOOTS OR SHOES.

SPECIFICATION forming part of Letters Patent No. 276,059, dated April 1'7, 1883.

Application filed January 27,1883.

To all whom it may concern:

Be it known that I, SAMUEL MAWHINNEY, of Worcester, in the county of Worcester and State of Massachusetts,have invented certain new and useful Improvements in Metal Lasts and Jacks for Boot or Shoe Makers; and I declare the following to be a description of my said invention, sufficiently full, clear, and exact to enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

The object of my present invention is to provide a practical and serviceable metal last and jack for boot or shoe makers, which can be conveniently made and used,and which will afford a firm and substantial support Without requiring nicety of fitting between the parts; also, to provide means for preventing the iustep-block from jarring out of position when the last is on the jack; also, to afford facilities for centering the block and for adjusting the block to give greater or less fullness of instep to the boot or shoe; also, to provide means for supportingand conveniently renewing the pins or studs in the sole of the last. These objects I attain by mechanism constructed as shown in the accompanying drawings and herein described, the particular subject-matter claimed being hereinafter definitely specified.

In the drawings, Figure l represents a part 'i side, part sectional, view of my improved metal last and jack. Fig. 2 is a rear view ot' the jack. Fig. 3 is a horizontal section of the jack-standard at line w fw. Fig. 4 isa plan View of the top or head of the jack. Fig. 5 is a horizontal section of the jack-head at line w x. Fig. 6 is a transverse section through the last at line y. Fig. 7 is a side view ofthe last. Fig. 8 is a plan view ot' the last with the instep-block removed therefrom. Fig. 9 is a bottom view of the instep-block. Fig. 10 is a bottom view' of the last, and Figs. l1, l2, 13, and 14 show the details of construction of the sole-studs and sole-stud-supporting devices.

In the drawings, A denotes the jack-standard; B, the base-piece or socket, which is fastened to the bench or post C for holding the standard and permitting rotation thereof. D indicates the metal last, and E the metal iustep-block.

The jack-standard A is madewith its top end or head, A', of the peculiar form shown,

(No model.)

said head being adapted for entering a socket or cavity, F, in the last l), and for retaining and supporting the last in position thereon, as indicated. Thejack-head A is slightly inclined rearward,its forward edge being rounded or fitted to form an inclined seat, a, for the front bearing-surface, d, of the last, while its rear edge is provided with side cavities or depressions, ff, substantially as indicated, into which enter rounded lugs or protuheranees yF,which are formed at the sides of the socket 'or cavity F within the heel of the last, at the positions indicated. The last is held upon the jack by the front d resting upon the inclined seat a, while the bunches or lugs F lock into the depressions or recesses ff and take bearing beneath the swellmJ of the head at its rear upper angle.

It will be noticed, as the rear edge of the jack-head A' is wider at the extreme top end, m, (see Fig. 4,) than at ffa short distance below, (see section Fig. 5 at line m 00,) and as the side surfaces are rounded or gradually inclined backward and downward, as indicated, while the inward projections or lugs, F', of the last are of rounded form, that a sure bearingis in all cases offered for the last at three pointsviz., at the front a, and at both sides of the heel atff-and the lasts are thus caused to set rmly upon the jack regardless of the unavoidable irregularities ofthe castings and the slight variations that will occur among the different lasts, or that may be occasioned by the wear of thejackhead and cavities ot' the lasts by use.

At the front of the jack-standard, below the bearing-seat c, is an offset, A2, containing a spring, I, or yielding projection, that serves to support the instep-block in position or prevent it from working downward by the jar of hammering when the last is on the jack. This spring I may be a small cylinder of rubber or elastic material set into a hole drilled into the standard A; or, if preferred, a metal or coiled-wire spring may be used in lieu of rubr ber.

The base B is formed open at one side, as indicated at bl, the two edges being held together by bolts or screws h, by means of which the tension or friction of the socket can be regulated for retaining the standard A with the proper degree of firmness to prevent its rotation by the ordinary hammering upon the last, while permitting sufficient freedom of ac- IOO IOS

tion to enable the operator to rotate it with ease, when desired. This open socket is also of great convenience and utility in the tting up of the jacks, since it obviates the necessity of extremely close fitting when turning off the bearing-surfaces. A

The last D is made with a recess or cavity, F, of the form shown, with the inclined and rounded portion at d, to take bearing upon the front ofjack-head A', and with the internallyprojecting bunches or rounded lugs, F', located within the heel of the cavity at the position shown. The cavity is slightly tapered inward laterally, and is inwardly undercut or extended longitudinally. (See Figs. 1 and 6, also dotted lines, Figs. 7 and 8.)

The block-seat E has a rounded central projection with guiding-surfaces e 6, and the instep-block E is made with a self-centering underlocking front end at Z, and with iuward-projecting lugs or bosses n, that are fitted to match the guiding-surfaces e on the last, so that the block will take. a proper position when placed upon its seat E. A cross yweb or ange,p, is formed at the upper extremity of the block, on which to catch the hook when pulling out the block from the boot or shoe previous to removing the last therefrom. l arrange screws K in the top of the last, upon which the block E rests. The said screws can be adjusted in or out to vary the position at which the block is supported, and thereby regulate the height ot' the instep as desired.

The studs or pinions L, for securing the inner soles to the lasts, are constructed and arranged in the manner illustrated in Figs. 10 to 14. The last is made with a cavity or recess at the position where the studs are located, into which is titted a small block or plate of metal, M, that is secured. in place by a screw, S, which passes through the block and screws into the metal of the last D. The sides of the recess and the sides ofthe block are similarly beveled, so that the block will set rmly in place and iiush with the sole' of the last. A hole of suitable size is drilled through the block at one side of the screw S, and the pin or stud L is arranged therein, with its head at the under side of the block M, so that the pin cannot be drawn outward when the sole is stripped from the last. When the block M is set into the recess the pin L is retained firmly in position, with its point or end projecting in t-he manner illus` M. The blocks or plates M are in the present instance of rectangular shape, but could, if preferred, be made as circular disks, or could be of other shape for retaining the studs in a manner similar to that herein shown.

What I claim as of my invention, and desire to secure by Letters Patent, is-

1. The jack-standard provided at its head with the front bearing-seat, a, and the side depressions or recesses, f` f, substantially as shown and described.

2. The jack-standard provided at its head with side depressions, f f, and forward bearing-seat, a, in combination with a last having a socket or cavity adapted to pass over said jack-head, and provided with bearing-surface d and inward protuberances or rounded lugs F at the inner sides ofthe heel, substantially as hereinbefore set forth.

3. vThe last-supporting jack having a basepiece or socket, B, formed with an opening, b, at one side, and provided with bolts or screws h, in combination with the rotating standard A, fitted thereto, substantially as set orth.

4. The combination, with thejack-standard A, ofthe spring or elastic projection I, adapted for sustaining the last-block E, substantially in the manner shown and described.

.5. The combination, with the metal last D and block E, of the screws K for supporting said block and regulating the height ot' the instep, substantially as set forth.

6. The metal instep-block E, provided with inward projections or bosses n, in combination with a last provided with guiding-surfaces e for engaging said bosses, substantially as and for the purpose set forth.

7. The metal instep-block E, having a selfcentering underlocking front end, l, centering-lugs n, and cross-web p, in combination with the metal last D, having its block-seat E formed with an undercut toe, a central projection with guiding-surfaces e, and pro- IlO vided with adjusting studs or screws K, subu,

stantially as and for the purposes set forth.-

8. A sole -stud supporter consisting of a metal plate or block, M, set into the bottom of the last and secured by a screw, S, for supporting andretainiug the pin or stud L, in the manner substantially as set forth.

9. The combination, with the metal `last provided with beveled recesses in its bottom, of the tapered blocks or supporters M,\the headed wire studs L, arranged through said block with their larger ends inward, and the screws S, securing said blocks within the recesses formed in the sole of the last, substantially as shown and described.

Witness my hand this 23d day of January, A. D. 1883.

SAMUEL M AWB INN EY.

Witnesses:

UHAs. H. BURLEIGH,

S. R. BARTON. 

